15-Letter Words Matching _S____________S

There are 28 15-letter words that match _S____________S. 4 are common words, such as ASSERTIVENESSES and ASSIDUOUSNESSES. A rarer one is PSYCHOSYNTHESIS. In this set, I is the most frequent open letter (27 words). 9 words contain a doubled letter.

Full list 28

Common words

assertivenessesassiduousnessesastrophysicistspsychotherapiesasclepiadaceousassociationismsessentialnessesosteomyelitidespsychodiagnosispsycholinguistspsychoneuroticsassignabilities
assertivenessesassiduousnessesastrophysicistspsychotherapiesasclepiadaceousassociationismsessentialnessesosteomyelitidespsychodiagnosispsycholinguistspsychoneuroticsassignabilitiesassociationistsassociativitiesastrobiologistsesterificationsestimablenessesoscillographiesosmoregulationspseudomorphismspseudoscorpionspsychoacousticspsychobiologiespsychochemicalspsychohistoriespsychosurgeriespsychosynthesespsychosynthesis

About this list

Words
28 (4 common words)
Common example
assertivenesses
Rare example
psychosynthesis
Doubled letters
9
Ending in S
28
Most frequent letter
I (27)

Questions

How many 15-letter words matching _s____________s are there?

28. 4 of them are common words.

What is a common example?

ASSERTIVENESSES is among the common words in this set.